Repeating error in panel.log: Unable to get key: Repository is not opened

[mahesh]

Symptoms
The following error repeats multiple times in /var/log/panel.log whenever the server's license information is updated (for example, during the Daily Maintenance Task):

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ERR [panel] Unable to get key: Repository is not opened
Cause
Corrupted /etc/sw/keys/registry.xml file.

Resolution
Regenerate the corrupted file:

1.Connect to the server via SSH

2.Remove the file:

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#rm -f /etc/sw/keys/registry.xml
3.Regenerate it with Plesk repair tool:

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#plesk repair fs -y